Search results

I am making all of my measurements using 43 measuring average power.

Whats happening is that I can get full output (about 900- 1000w) when I drive the box on sideband, but when I switch to am I can only get 300 watts. If I had a few more watts of drive I could get it up where it goes or I think I can check the resistance on the input to see if it is correct.

I have a XForce X-800 with 2ea 2SC2290's driving 8ea 2SC2879's. My 24 watts pep is not driving the 2290's enough to reach rated power on the amp. What resister is typical in these amplifiers? Thanks in advance

Put a beam up on the flat side 1/2 wave up or more and point it where you want to talk. You will not be disappointed.

Thanks for the replies. My biggest concern wasn't the total power output but whether or not there was something wrong with the amp. I removed the lid of the amp and it looks perfectly new. I checked each transistor with an ir meter and they all seem to be working evenly. All temps are within a...

Anyone have any experience with what these amps do?

157amp with twin batteries. Its in a diesel p/u. I am only getting a half volt drop on transmit so I don't think I have a charging problem...But maybe I guess.

I have just purchased a 2x8 XForce X800 amp used. It has 2 2sc2290's driving 8 2sc2879's. I have a Bird meter that is set up for average power and peak power. When I set the driver to 3 watts dead key and have the bird set to average, I get 250 watts. When I modulate the signal it swings up to...

Upgrade an M4V I <<BELIEVE>> you're OK with the 2879 conversion. The problem with the M4V being converted to 2879s is with the output combiners. If you have ANY VSWR, you'll smoke them. I have an M4V with MRF455 transistors that I would like to replace with a higher output device. Is...

I still have my Cobra 98 from the 70's. It's a tube set and I was Chicken Choker in Livermore, CA. KJT 6691.

Is the remote control for a Messenger M4V available Cotton Mouth? Thanks

Hi. I just bought a new DX959. The s meter would only read 10 over s9 when I was keying a hand held walki talki right by it. I adjusted VR1 and VR2 for am and ssb to give 60 over s9 readings with the 4 w walki talki keyed up near the antenna and now the radio seems to indicate well. Has anyone...

Hi just bought a new DX959. The s meter would only read 10 over s9 when I was keying a hand held walki talki right by it. I adjusted VR1 and VR2 for am and ssb to give 60 over s9 readings with the 4 w walki talki keyed up and now the radio seems to indicate well. Has anyone else seen this...

Thanks. Hygain just told me about 4 weeks ago that those part numbers were no longer available... Gonna give them another call.

OK , I just re read your post, Eastside. So those part numbers were out of the new manual? Just want to make sure before I call up Hygain. Thanks man

I saw that in a copy of the original manual. Problem is hygain does not make those parts anymore. I called them up and ordered some of the insulators that have not changed part numbers but they could not/ would not help with the gamma stuff. Since they are now manufacturing the old antenna...

Can you post the part numbers that hygain is using for the matching gamma parts? I have an original 500 that I need to replace the matching network on. Thanks

Well, I won't be sending it out to be fixed. I will keep on trying to fix it myself. I was hoping that somebody on here would read this and say "dang, that just happened to my radio last week and here's what I did to fix it" or something like that. Anyone know what the diodes up above the final...

Thanks Robb, I have the sams manual and went through it but could not pin point the problem. I am still staring at the schematic trying to figure it out but I think I am in over my head here...

Yep, Tests out at 8.25vdc